<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
        //var x = 'abcdefg'
        //var y = ((str.split('')).reverse()).join('')
        
       // console.log(y);
        
        function fn(str){
if(str === ((str.split('')).reverse()).join('')){
    console.log('true');
    
}
else{
    console.log('false');
    
}
        }
       var res= fn('aba')
       //console.log(res);
       
    </script>
</body>
</html>